种植作物,必须和土壤打交道。作物生长所需要的具体条件虽然各有不同,但一般地说它们都需要阳光、温度、水分、空气和养料。这五种因素除阳光外,大部分来源于土壤。所以作物的吃(养料)、喝(水分)、住(扎根立足)的条件都是由土壤供给的。很明显,没有土壤也就没有农业,所以土壤是农业生产的基础。土壤能及时满足作物生长所需要的条件的能力称为土壤肥力。肥力代表土壤的本质,肥力是土壤的基本特性。土壤肥力具有两方面的意义。一方面土壤本身具有这种性 Crops must be dealt with in the soil. Although the specific conditions required for crop growth vary, they generally require sunlight, temperature, moisture, air and nutrients. In addition to these five factors, most of the sun comes from the soil. Therefore, the conditions of eating (nourishment), drinking (water) and living (taking root) are supplied by the soil. Obviously, there is no agriculture without soil, so soil is the basis of agricultural production. Soil ability to timely meet the conditions required for crop growth is called soil fertility. Fertility represents the essence of soil, and fertility is the basic characteristic of soil. Soil fertility has two meanings. On the one hand the soil itself has this nature